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A147048 as a simple table

na(n)
11
21
31
41
51
61
71
81
93
103
115
125
1313
1413
1529
1629
17101
18101
19469
20469
212569
222569
2314457
2414457
2596029
2696029
27884501
28884501
299747473

[1,1,1,1,1,1,1,1,3,3,5,5,13,13,29,29,101,101,469,
 469,2569,2569,14457,14457,96029,96029,884501,
 884501,9747473]